Design of Circuit for a Fingerprint Sensor Based on Ridge Resistivity

  • Jung, Seung-Min (Department of Information Science and Telecommunication, Hanshin University)
  • Published : 2008.09.30


This paper proposes an advanced signal processing circuit for a fingerprint sensor based on ridge resistivity. A novel fingerprint integrated sensor using ridge resistivity variation resulting from ridges and valleys on the fingertip is presented. The pixel level simple detection circuit converts from a small and variable sensing current to binary voltage out effectively. The sensor circuit blocks were designed and simulated in a standard CMOS 0.35 ${\mu}m$ process.


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